Printing-machine



(No Mod-e1.) 4 Sheets-Sheet I. W. H. PRICE, Jr.

PRINTING MACHINE.

No. 318,798. Patented May 26, 1885.

WITNESSES u Farms. mmmm m Naliu'ngwn. u c.

(No Model.) 7 "4 Sheets-Sheet 2.

W. H. PRICE, Jr.

PRINTING MACHINE.

No. 818,798 Patented M8 726, 1885.

(No Model.) 4 Sheets-Sheet a. W. H. PRICE, Jr.

PRINTING MACHINE.

NO. 318,798. Patented May 26, 1885.

LVN/156558 VENYY/P (No Model.) 4 Sheets-Sheet 4. W. H. PRICE, Jr;

PRINTING MACHINE.

No. 318,798. Patented May 26, 1885.

WITNESSES W mu m? WFJFHM 1- WVILLIAM H. PRICE, JR,

PRINTING- ?Parmvr @rmcn.

OF CLEVELAND, OHIO.

MACHINE.

SPEOEFICATION forming part of Letters Patent No. 318,798, dated M'ay 26, 1885.

Application filed July 5, 1884. (No model.) 7

T0 aZZ whom it may concern.-

Be it known that I, XVILLIAM H. PRICE, J r., of Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Printing-Machines; and I do hereby declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in printing-presses, and more especially to mechanism for operating an impression throwoff, the object being to arrange this mechanism in such a manner that it will be operative at the forward throw of the bed and cause the type to be slightly separated from the paper on the platen, so that no impression is made; but at the end of the backward throw will leave the bed in substantially the same posi tion as when the throw-off is not in use.

A further object is to so arrange the parts that the hand-lever that shifts the throw-off will stand in either position, forward or back, without fastening.

With these objects in view my invention consists in certain features of constructiomand in combination of parts,hereinafter described, and pointed out in the claims.

My invention pertains to a class of jobbingpresses that are well known and have been in common use for many years, and relates only to the throw-off mechanism. In operating these presses the platen is faced with one or more sheetsof paper, cardboard, or similar material, known as tympan-sheets, and upon these the paper is laid that} is to be printed, and to prevent the backs of the printed sheets from being soiled it is necessary to keep the tympan-sheets clean. At times the press is run without printing to distribute the ink properly on the inking-rollers, and by means of the throw-off the type are not brought forward quite far enough to engage the tympansheet; also, in operating the press, if sheets of paper are misplaced by means of the throwoff, no impression is made, and of course the sheets are not injured; but to accomplish this it is essential that the shifting mechanism of the throwoff be so arranged that it can be operated as quickly as possible. Any catch or other device for-holding the shifting-lever that must be loosened before the lever is moved, however convenient it may be arranged, must necessarily be more or less a hinderance. I have therefore arranged the parts in such a manner that the throw-offshifting-lever is held by gravity in either of the two positions required. The inking-rollers,in the usual man ner, are supported at either end by mechanism attached to frames, the central parts of which are journaled on a shaft that passes laterally through the bed. On one side of these frames are lugs respectively pivoted to rods, the other ends of which are pivoted to the supportingframe and arranged in such a manner that the rollers are made to pass from the inking-plate down over the type and back by the movement forward and back of the bed-plate. As the bed-plate comes forward to make the impression the rollers pass up out of the way and onto the ink-plate, and the relation of parts is such that the rollers usually travel about half way (m ore or less) across the ink-plate. hen the throw-off is used, the bed-plate, as aforesaid, does not come forward quite so far, and the ink-rollers, therefore, do not travel quite so far up theinlcplate, which isa matter of no consequence. At the other terminus there is only room for the rollers to pass over the type, leaving a slight clearance between the forward or lower roller and the arms of the bed-plate. The backward movement of the bed -,plate must therefore always terminate at a point that will prevent the rolls,after having passed over the face of the type, from colliding with the said arms. I have therefore arranged the throw-off mechanism in such a manner that the bed-plate moves back to approximately the same point, with or without the action of the throw-off.

My invention will perhaps be more easily understood after a brief general description of the machine illustrated by the accompanying drawings.

Figures 1 and 2 are side views in elevation, the former showing the bedplate moved forward,o r to the right hand, and the latter showing the bed-plate swung back to the left hand;

but in both positions the machine represented 100 1's in its normal conditionthat is, without the action of the fthrow-off. Fig. 3 is an end view in elevation. Fig. 4 is a diagram representing a side view in elevation of the different positions of the throw-off mechanism.

A represents a supporting frame, upon which are mounted the shafts B and O, that are each journaled in suitable boxes secured to the frame A. The driving-shaft B is pro vided with the tight and loose pulleys b and b, and with the fly-wheel B and the pinion b, thatengages the gear on the shaft 0. The opposite end of the shaft 0 is provided with the disk 0", and the gear and disk have respectively the wrist c, forming equal cranks that operate in unison and have attached one end of the side arms or connecting-rods c.

D is the belt-shifter provided with the shifting-lever d.

E is the platen that in Fig. 1 is shown in position to receive the impression, and in Fig.

Lil

2 is shown in position to receive the paper.

F is the bed-plate, and is provided with the armsf, that are mounted on the shaftf, that is journaled in the frame A.

G is a shaft of some size, and is journaled in suitable boxes connected with the bed-plate, and has attached the rock-arm G. The ends of this shaft terminate in the wrists g, that are considerably smaller than the shaft, and are eccentric therewith, and are connected, respectively, with one end of the side arms, 0. In a recess (not shown) in the face of the bedplate the type are placed, the face of the type being about flush with the face of the bedplate.

in side of the wrists you the shaft G are journaled the swinging roller-frames H. These frames have each lug on one side provided with a laterally-projecting wrist, h, to which are respectively attached one end of the connecting-rods H, the other ends of which are pivoted at h to the frame A. These frames are provided with the sliding rods I, that are connected with the yokes I, in which the inking-rollers i arejournaled. The rods are provided, in the usual manner, with the springs 15, that draw upon the rods endwise,and by means of which the rollers are pressed upon the inkplate, type, or other surface over which they travel.

J is the inlcplate, and is provided, in the usual manner, with mechanism for revolving the same.

The sides F of the bed are of such shape that they support the ink-rollers on their passage between the ink-plate and type.

As the gears O and the disk 0 are revolved by means of the wrists c and the side arms or connectingrodsc the bed-plate is alternately brought forward to make an impression, as shown in Fig. 1, and moved back, as shown in Fig. 2. \Vith the forward movement of the bed-plate the rollers pass up over the type and onto the ink-plate; but, as aforesaid, it is not essential just how far up the ink-plate they travel. \Vith the backward movement of the bed the rollers pass down over the type, but can go no farther without coming in contact with the arms f.

The mechanism 'thus far described is common to all this class of machines. I will now describe my improved throw-off mechanism.

The relation of parts is such that when the shaft G is turned so that the wrists g are on the back side or left hand, as shown in solid lines in Fig. 4, the bed,when moved forward, will cause an impression. This normal position of the shaft G is maintained by the following connections. The arm G is pivoted to the rod K, the other end of which is pivoted to the arm L. This arm is integral with the slotted arm L and the sleey' ehthat are mounted on the shaft L that isjournaled in the frame A.

M is a rock-arm mounted on the shaft M,

that is also journaled in the frame A. This arm is provided with a laterally-projecting wrist. in, that operates in the slot Z of the arm L. On the end of the shaft M, and outside of the frame, is secured the arm M extending in the opposite direction from the arm M. The arm hi is connected by the-rod a to the shifting-lever N,that is pivoted-to the frame A at O.

The position of the lever N and the co-opcrating parts when the press is printing is shown in solid lines in Fig. 4, and the position of the same parts when the'throw-off is used is shown in dotted lines. The position of the shaft G when the bed-plate is thrown back is shown at the left hand, and the position of this shaft when the bed-plate is forward, as when the impression is made, is shown at the right hand. It will be observed that in both positions of the shaft G thelever K (in solid lines) holds the arm G in such position that the wrist g is at the rear or left-hand side, and with this position of the wrist rela ti've to the shaft G the relation of parts is such that an impression is made with every forward movement of the bed-plate. I will describe the position of parts when the throwoff is used, as shown in dotted lines. The arm L is thrown forward and upward, and in such position that the rod K at the end of the backstroke of the bed-plate brings the arm G, and consequently the wrist g and the bed-plate, to the same positions as when the throw-off is not used; and hence'the downward movement of the ink-rollers, that, as aforesaid, is controlled by the back-stroke of the bed-plate,wi1l always terminate at the same point. WVhen the bed'plate is moved forward, the rod K raises the arm G so that the wrist is more nearly over the center of the shaft. When the shaft is turned from its normal position, the wrists 5 act as fulcrums, and by means of the eccentricity of the wrists with the shaft thelatter and the attached bed-plate are moved back, or to the left hand, so that the type does not make an impression. In shifting this mechanism by the lever N the wrist m of the arm M slides in the slot Z, by means of which the arms L are moved to either of the positions shown, and the outer end wall of the slot Z acts as a stop to the wrist at when the arms M and L are at right angles to each other, and in this position the arm M and wrist m would hold the arm L and its attachments without exerting any force on the lever N. If preferred, the slot Z may continue to the outer end of the arm L, and a pin passed laterally through the arm to act as a stop to the wrist m.

Theheavier end of the lever N is above the fulcrum, so that the lever is held by gravity in either of the positions shown. The open ator has therefore only to move the lever as rapidly as he chooses in the one direction or the other until the wrist m is stopped at the end of the slot, and as the handle of the lever is only moved a few inches the change can be made in an instant.

The paper or cards that are being printed are frequently of costly material and may have already been printed on the reverse side, or have previously been printed in several colors, so that spoiling a sheet would involve a considerable loss, and when the operator finds that he cannot get a sheet properly placed he has no time tolose in resorting to thethrowoff. It will therefore be seen that the arrangement of parts, as described, by which the throw-off can be operated so quickly is a valuable improvement to this class of printingpresses.

The frames H may be coupled together by the cross-bar P, so that one rod H" will operate both frames.

Vhat I claim is 1. In aprinting-press, an impression throw off consisting, essentially, of a shaft passing laterally through the bed and j ournaled therein, and provided with wrists eccentric with the shaft, and to which the side arms are at tached that oscillate the bed, and a rock-arm projecting from the shaft and connected by suitable mechanism to a hand-lever, by the movement of which the shaft is turned to make the throw-off operative or inoperative, the parts being arranged substantially as described, so that the operation of the throwoff lessens the movement or throw of the bed t without changing the terminus of the backward throw of the bed, and so that the handlever and connecting mechanism sustain themselves in the positions, respectively, that make the throw-off operative or inoperative without fastening, substantially as set forth.

2. In an impression throw-off for a printingpress, the combination, with the shaft G, having eccentric-wrists, with the arm L and the slotted arm L, integral and fulcrumed and connected, as aforesaid, of the arm M, provided with the wrist m, operating in the slot of the arm L, and suitably connected with ashiftinglever, by means of which the arm L is shifted to either of the positions shown, and the arrangement of parts is such that the two arms L and M are at right angles in either of the positions required, and the parts thereby held in position without fastening, substantially as set forth.

3. In an impression throw-off for printingpresses, the combination, with the bed and a shaft journaled therein, and provided with wrist eccentric with said shaft, of the arms L, connected indirectly with said shaft, the arm L, having the elongated slot therein, the arm M, having a wrist resting within the slot in the arm L, an operating-lever and devices connecting said lever and arm M, the parts being so constructed that the end walls of the elongated slot form a stop to limit the movement of the arms, substantially as set forth.

In testimony whereof I sign this specification, in the presence of two witnesses,this 18th day of June, 1884.

WILLIAM H. PRICE, JR.

Witnesses:

ALBnL'r E. LYNCH, CHAS. H. Donna. 

